[FEATURE] giveaway plugin

[en3sis]

📝 Is your feature request related to a problem? Please describe.
We want a solid giveaway system

🧬 Describe the solution you'd like

• new table for guilds-giveaways
• a new plugin and the command for it
• we should be able to specify title, description, ending date, allowed roles(?), active
• a button to join the giveaway
• functionality to randomly choose a participant when the event ends (this will require to get the cronjob on the bot or supabase side)
• when it finishes, maybe we can create a thread to the giveaway message where the winner is announced

Note: We add before a full-automated delivery system where we could set the reward (cd key for example) and it would be sent as DM to the winner. We could make use of the encrypt/decrypt functionality to store sensitive data if auto-delivery is enabled

👩🏼‍💻 Additional context